Mila Kunis was 11 in Piranha when she played the character 'Susie Grogan'.
That was over 29 years ago in 1995.
This was her first recorded movie acting credit (although may not technically be her first actual acting role).
Today she is 40, and has starred in 49 movies in total, 47 of those since Piranha was released.
In Piranha, I think Mila Kunis looks: